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can: sja1000: Validate initialization state in start method
authorMirza Krak <mirza.krak@hostmobility.com>
Fri, 8 Aug 2014 12:30:50 +0000 (14:30 +0200)
committerMarc Kleine-Budde <mkl@pengutronix.de>
Thu, 21 Aug 2014 08:49:34 +0000 (10:49 +0200)
commit9e37bc6c635a85e0ae3067f19d6f84e1c4516a6c
treeb2d78309495db7433d427c35f463727e18faf4abtree | snapshot (tar.gz zip)
parent02784f1b05b8f241c8180af88869e717e2758593commit | diff
can: sja1000: Validate initialization state in start method

When sja1000 is not compiled as module the SJA1000 chip is only
initialized during device registration on kernel boot. Should the chip
get a hardware reset there is no way to reinitialize it without re-
booting the Linux kernel.

This patch adds a check in sja1000_start if the chip is initialized, if
not we initialize it.

Signed-off-by: Mirza Krak <mirza.krak@hostmobility.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
drivers/net/can/sja1000/sja1000.c diff | blob | blame | history